不啻天渊

Explanation: As good: no different. Yuan: pit. Tantamount to the pit from the sky above the bottom. Very different metaphor. 　　Usage: Verb-object type; for the predicate; analogy very different 　　Source: Qing Li Yu, "Xian Qing Ou Ji fourth Spoken": "Wu Wu sound has, the more the more language, quite different as good as poles apart." 　　Examples: Revolution than that, straight ~ separated by it. (Caidong Fan, Xu hut Father "Romance of the Republic of the popular" Back to the twenty-eighth)